Cassette holder



FIG. 1 is a perspective view of a cassette holder showing my new design, the broken lines showing cassettes are for illustrative purposes only;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front end elevational view, the rear being identical thereto;

FIG. 4 is a side elevational view, the other side being identical thereto; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a cassette holder, as shown and described. 